JPH0310406Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fastening clip for screws made of plastic that is effective when, for example, screwing parts onto the surface of an automobile body. To provide a fastening clip which enables secure fastening when a panel such as a body serving as a base is thin and it is difficult to fasten the clip.

Conventionally, two engaging legs 4 that can be opened from the lower surface of a collar 40 as shown in FIG.
1 is hung vertically, and a through hole 43 for receiving a fixing screw 42 is formed in the center of the collar 40. A plastic fixing clip is known.

As shown in the figure, this conventional fastening clip is inserted into a through hole 45 formed in a body 44 while squeezing the engagement leg 41, and after bringing the flange 40 into contact with the surface of the body 44, it is fastened to the upper surface of the flange. Part 46
At the same time, screw the fixing screw into the through hole 43 provided in the collar through the through hole 47 provided in the part to secure it, and at the same time, insert the tip of this screw into the engaging leg 4.
1, the engaging legs are forcibly expanded within the through holes 45 of the body, thereby making it possible to directly screw the parts onto the surface of the body.

However, as described above, in the case of a panel such as a body, this conventional fastening clip expands the engaging leg 41 with the screw 42, thereby extending the outer surface of the engaging leg into the through hole 45. Because it is pressed against the edge and engages with the body, that is, the panel,
If the panel itself is thin and lacks rigidity, the edges of the through holes 45 will curl up, reducing the holding power and causing wobbling.
Occasionally, there were problems such as the engagement leg expanding inside the through hole falling out as it was.

This invention was devised in view of these points,
An engaging leg is hung from each of the two divided collar parts so as to face each other, and the leg ends are connected together at a connecting part, and the collar part and the engaging leg are opened and closed from this connecting part as a reference point. At the same time, a through hole is formed in the center of the connecting part to receive the screw, and the two engaging legs are inserted into the through hole opened in the panel, and provided on the outer surface of the through hole. After inserting the locking step into the back side of the panel and fixing it, attach the parts to be fixed to the top of the above-mentioned flange, and insert the fixing screw through the hole provided in the two locking legs from between the flange. screw it into the through hole of the connecting part through the
By tightening, the parts are fixed, and at the same time, by tightening this screw, the two engagement legs are opened, and the above-mentioned engagement step is engaged with the back side of the panel, and the head of the screw is opened. An object of the present invention is to provide a fastening clip for screw receiving, which holds the panel and parts between the fastening step and the fastening step and fixes the panel to the panel.

The drawings show an example of the use of the fastening clip of the present invention as a fastening clip for a side mirror of a car. Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a plan view, and Fig. 4 is a side view. is the bottom view, and Figure 5 is the 1st
Figure 6 is a sectional view taken along the line B-B, and 1 and 2 are divided tsuba parts that substantially constitute one tsuba, and 3 and 4 are the two tsuba sections. The engagement legs 5 are vertically disposed so as to face each other from the lower surface of each part, and reference numeral 5 is a connecting portion that connects the leg ends of the engagement legs together.

The flange portions 1 and 2 are both formed into a substantially rectangular shape, and the two are combined to form a substantially square shape, and a gap 6 is provided between the two. In this embodiment, elastic pieces 7 and 8 are provided on the opposite edges of both collar portions so as to partially cut and raise the elastic pieces 7 and 8 so as to project outward.

The engaging legs 3 and 4 hang down oppositely along the opposing edges of the collar part with the same spacing as the above-mentioned spacing 6, and the leg ends are opened and expanded somewhat outward and continue to the connecting part 5.

As shown in FIGS. 5 and 6, the engaging legs 3 and 4 have opposing inner surfaces substantially flat and outer surfaces each having an arcuate surface, and the combination of the two substantially forms one It has a cylindrical shape, and the connecting portions 5 that connect the leg ends are also arranged in a circular shape to form one leg body as a whole.

Further, locking step portions 9 and 10 are provided on the arcuate outer surfaces of both of the engaging legs 3 and 4 in the middle of their lengths.

The locking step portions 9 and 10 are formed into a tapered shape by gradually raising the arcuate outer surface upward from the leg end, and the upper surfaces 9' and 10' are horizontal planes perpendicular to the outer surface. It is arranged to face the lower surface of each of parts 1 and 2.

In the figure, reference numeral 11 denotes a through hole for receiving a screw, which is provided vertically through the center of the connecting part 5 formed in a circular shape, and reference numerals 12 and 13 denote insertion legs 3 and 4 for guiding the screw into this through hole. This is a guide groove provided vertically on the inner surface of the collar, and this guide groove extends to the center of the opposing edges of the collar portions 1 and 2.

By the way, the opposing edges of the collar portions 1 and 2 shown in this embodiment are offset at the central portion where the guide grooves 12 and 13 are provided, so that one edge of the guide grooves 12 and 13 is formed into a perfect circular arc. The other edge is continuous with the plane of the opposing edge, and the upper end of the guide grooves 12, 13, that is, the center portion of each opposing edge of the collar portions 1, 2, is cut into a dish shape to form a screw guiding portion 14, 15 is provided so that a fixing screw 16, which will be described later, can be screwed in easily.

The fastening clip according to the present invention is constructed as described above. This clip is integrally molded from thermoplastic synthetic resin, and uses the elasticity of the material to hold the fastening legs 3, 4 and the elastic piece 7 of the collar part. 8 can be bent freely.

Now, the actual use of the fastening clip of the present invention constructed as described above will be explained below. Figures 9 to 1
Figure 0 shows the case where the mounting base 18 of a side mirror is fixed to the body 17 of an automobile using the fastening clip and the fastening screw 16 of the present invention. This is an auxiliary plate member for wrapping.

FIG. 9 is a partially cross-sectional front view showing the state immediately before screwing, in which an auxiliary plate member 19 is attached to the surface of the body 17 in which a through hole 20 is formed, and an insertion hole 21 formed in this plate member is shown. is aligned with the through hole 20.

The insertion hole 21 is a circular hole having approximately the same diameter as the through hole 20, and a square recess 22 in which the approximately square collar portions 1 and 2 are accommodated is provided at the upper opening thereof.

The fastening clip is passed through the insertion hole 21 and the through hole 20 of the body so that the two engaging legs 3 and 4 are narrowed, and the fastening step parts 9 and 10 are inserted into the back side of the body, and the flange part 1 is inserted. . temporarily lock it. In the state shown in FIG. 9, the locking steps 9, 1
0 is in a state separated from the lower surface of the body panel 17 of the automobile for a predetermined period.

In this way, the through hole 20 of the body, that is, the panel
After fixing and locking the clip, attach the auxiliary plate member 19.
Mounting base 18 of the side mirror to be fixed on the top surface of
are placed one on top of the other, and the insertion hole 23 opened therein is aligned directly above the collar part, so that the fixing screw 16 is exposed from above.

The fixing screw 16 is inserted through the insertion hole 23 between the two collar parts 1 and 2 that fit into the recess 22 of the auxiliary plate member, and is inserted into the guide groove 1 provided in the engagement leg.
2 and 13 into the through hole 11 provided in the connecting portion 5, and screwed therein.

FIG. 10 is a partially sectional front view showing the state in which the mounting base 18 is fixed to the surface of the panel 17 by screwing the fixing screw 16 into the fixing clip, and the fixing clip is inserted into the fixing screw 16. Therefore, the two engaging legs 3 and 4 that had been brought together until then are opened inside the through hole 20, and the engaging steps 9 and 10 provided on the outer surface thereof are made to protrude from the back surface of the panel 17. . When the fixing screw 16 is tightened in this state, the mounting base 18 is pressed by the sinking of the head 16' of the screw, while the clip is pulled up by the screw into the locking leg provided on the engaging leg. The upper surfaces 9' and 10' of the stepped portions 9 and 10
The panel 17 and the mounting base 1
8 is sandwiched between the head 16' of the screw and the locking step portions 9 and 10 and tightened so that they are in contact with each other.

At this time, the clip is prevented from being rotated by the twisting of the fixing screw 16 by housing the collar portions 1 and 2 in the recess 22.

Figure 11 shows the fixing state when the thickness of the panel 17, which is the body of the automobile, becomes thinner than that shown in Figures 9 and 10. Rising and locking step portion 9,
At step 10, the panel is pushed up, and as in the previous case, the panel and mounting base are clamped and tightened with the head 16' of the fixing screw.

In summary, in the conventional screw-receiving clip of the present invention, the engagement leg provided on the clip is expanded inside the through-hole of the panel by screw insertion, and this expansion causes a dot or line to appear on the edge of the through-hole. While the clips were engaged to prevent the clips from coming off, and the parts were also secured by tightening the screws, the expansion of the engagement legs did not directly engage the through-holes in the panel, but rather the screws were inserted first. The locking steps 9 and 10 provided on the outer surface of the locking leg are made to protrude from the back side of the panel, and as the parts to be fastened are tightened by twisting the screws, the locking steps 9 and 10 are tightened by tightening the screws. The upper surfaces 9' and 10' of the step portions are brought into contact with the back surface of the panel, and the parts are secured by being held between the step portions and the heads of the fixing screws. In this way, by bringing the upper surfaces 9' and 10' of the locking step into surface contact with the back surface of the panel, the expansion force of the engaging legs 3 and 4 does not directly act on the through-hole of the panel, so that the through-hole is closed. There is no possibility that the diameter will expand and play will occur, or that the engaging leg will not come out. Furthermore, in the past, the locking force varied depending on the width of the opening of the locking legs, but in the present fastening clip, the locking steps 9 and 10 engage with the panel in a tangential manner, so the locking force is always constant. The locking force is ensured, and even in the case of a thin panel, there is an advantage that stable engagement can be obtained without problems such as the edges of the through holes turning over.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
The figures are a front view of the fastening clip according to the present invention, Fig. 2 is a side view, Fig. 3 is a top view, Fig. 4 is a bottom view, Fig. 5 is a sectional view taken along the line A-A in Fig. 1, and Fig. 6 is also B
-B sectional view, Fig. 7 is Fig. 3 C-C line sectional view,
FIG. 8 is a sectional view taken along the line D-D, FIG. 9 is a partially sectional front view showing the state in which the fastening clip is inserted into the panel, and FIG. 10 is a partially sectional front view showing the state in use. FIG. 11 is a partially sectional front view showing another embodiment in use, and FIG. 12 is an explanatory view of the conventional example. 1, 2...Brim part, 3, 4...Interlocking leg, 5...
Connecting portion, 9, 10... Locking step portion, 9', 10'...
Upper surface of locking step, 11... through hole, 12, 13...
... Guide groove, 16 ... Fixing screw, 17 ... Panel body, 18 ... Parts mounting base, 20 ... Panel through hole.

Claims (1)

[Scope of utility model registration request] A pair of engaging legs whose leg ends are connected to each other via a connecting part so that they can be opened and closed freely, and which are passed through the insertion hole of one panel, and a pair of engaging legs that are fitted into a recess provided in the insertion hole at the upper end of these engaging legs. The legs are opened by a set screw that enters between the engagement legs through the insertion hole of the other panel overlaid on the one panel, and a locking step portion provided on the outer surface of the one panel is opened. At the same time, the screw is inserted into a through hole that vertically passes through the connecting part, and the head of the screw is brought into contact with the other panel, so that the panels are mutually connected to each other between the locking stepped part and the other panel. The fastening clip for screw receiving is configured to tighten the screws, and the pair of collar portions are formed with elastic pieces for temporary fixing that protrude outward from the opposite edges, while the pair of locking legs are tightened. The outer surface is formed into an arcuate surface and the upper part is substantially reduced in diameter to form a columnar shape, and the locking step provided on the outer surface has an upper surface formed at right angles to the outer surface. A fastening clip for screw holders characterized by facing the lower surface of the collar part.